puppeteer/docs/api/puppeteer.page.emulatevisiondeficiency.md
jrandolf f07ad2c661
fix: update documentation on configuring puppeteer ()
This PR updates the docs regarding configuring puppeteer. In addition,
some changes have been made to the documentation generator to show
default values on the documentation site.

Also fixes: https://github.com/puppeteer/puppeteer/pull/9144
2022-10-24 09:07:05 +02:00

1.4 KiB

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Page.emulateVisionDeficiency

Page.emulateVisionDeficiency() method

Simulates the given vision deficiency on the page.

Signature:

class Page {
  emulateVisionDeficiency(
    type?: Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type']
  ): Promise<void>;
}

Parameters

Parameter Type Description
type Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type'] (Optional) the type of deficiency to simulate, or 'none' to reset.

Returns:

Promise<void>

Example

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto('https://v8.dev/blog/10-years');

  await page.emulateVisionDeficiency('achromatopsia');
  await page.screenshot({path: 'achromatopsia.png'});

  await page.emulateVisionDeficiency('deuteranopia');
  await page.screenshot({path: 'deuteranopia.png'});

  await page.emulateVisionDeficiency('blurredVision');
  await page.screenshot({path: 'blurred-vision.png'});

  await browser.close();
})();